Prototype Before You Launch

1) Prototypes can be used to confirm the products fit and function. Many design issues are identified and corrected during this stage. Having a functional part allows deeper understanding and enhances innovation.

2) Prototypes can also be used for marketing and customer response. A product can be validated by end-users to ensure a positive market response before the final product is delivered.

3) Test many concepts quickly and inexpensively. Product development often involves many failures before the best product is finally produced. Rapid prototypes can be done in a matter of hours if 3-D model is a

Selective Laser Sintering (SLS)

Stereolithography is the most common form of rapid prototypes (SLA).  Stereolithography is a layered manufacturing method that uses photo curable liquid resin in combination with an ultraviolet laser. When the laser passes over the curable resin, it hardens the surface of what will become a layer of the formed part. Each layer is formed in 0.002" to 0.004" steps until the part is complete.

Selective Laser Sintering (SLS) is another rapid prototyping process that offers improved physical properties compared to stereolithography (SLA). Selective Laser Sintering (SLS) rapid prototypes are made in layers like SLA, but instead of a curable liquid, SLS uses powdered materials that are fused with a CO2 laser. A thin layer of powder is laid down and the CO2 laser draws on the powder, sintering the particles together. Layers are produced in 0.004" steps until the part is complete. Once the SLS part is complete, it will be a durable and functional part that can be finished and painted.

Stereolithography (SLA) offers high accuracy and excellent finish, but has moderate strength. Selective Laser Sintering (SLS) is strong and offers a variety of materials to closely match production materials. Finish isn't as good as SLA, but SLS can be painted. Contact MDI if you need assistance selecting the right technology.